The Burger Guru already specializes in weird game and assorted critter patties, so lion sliders would be de rigueur, but controversial: When an Arizona restaurant announced it would serve lion tacos earlier this year, it of course resulted in violent threats leveled against its owner. Of course, "Roaaaarrrr" is a pretty nebulous clue. Maybe those Gastronauts meant to write "raaagh, raaagh," and plan on serving fillet of dungeon dragon.